Ariston’s NUOS: More cost effective than electric-only water storage

31/07/2013

Ariston has revealed new figures comparing the running costs of its NUOS to other forms of water heating. The data reveals the floor-standing unvented cylinder with integrated air source heat pump is over £400 cheaper to run than electric-only products, as well as significantly lower in price when compared to LPG and oil-fired systems.

Commenting on the running cost comparison, Gareth Ash, Ariston’s Product Manager, said: “Energy prices are always at the forefront of end users’ minds, so here at Ariston we thought we would shine some light on just how much they can save by installing a NUOS heat pump water heater in comparison to other forms of heating.

“Electricity costs 14.5 pence/kWh, LPG 7.6 pence/kWh and domestic oil 6.0 pence/kWh*. Natural gas is lower, at 4.8 pence/kWh. So, the ratio between natural gas and electricity prices is 3:1. We have calculated that NUOS has an annual cost of £227 to heat 200-litres of domestic hot water, which is only slightly higher than a gas boiler. The real revelation, however, is that compared to electric heating – which has an annual cost of £635 – as well as LPG (£339) and oil (£254), there is a clear benefit to installing NUOS, either as a direct replacement for electric-only hot water storage, or in conjunction with an LPG or oil-fired heating system.”